I am glad to hear I am not alone in the cadence of deleting social media apps for a time, only to install them again (and sometimes, repeat). When I really really want to stay off Facebook, I change the password to a random long keyboard smash of numbers and letters. Yes - I can get back in again - but it forces me to go through the password reset process first, which is both annoying and takes a little time; it’s a good barrier to entry.
Facebook is the one that I have the easiest time ignoring. I just find it so banal that I have no interest. I keep my account active purely for the invites and messages. Twitter is my bugaboo. I hate it, because it's such a moronic echo chamber, but I love it because it's such a moronic echo chamber. How many times can I read 500 comments about what a vile rapist Roy Moore is? A lot. Until I can't anymore. Then I can again.